scholarly journals Optimization of Precious Metal Recovery from Waste Electrical and Electronic Equipment Boards

2011 ◽  
Vol 02 (06) ◽  
pp. 675-682 ◽  
Author(s):  
Massimo Delfini ◽  
Mauro Ferrini ◽  
Andrea Manni ◽  
Paolo Massacci ◽  
Luigi Piga ◽  
...  
Keyword(s):  
Precious Metal ◽  
Metal Recovery ◽  
Electronic Equipment

Turning waste into wealth: remotely NIR light‐controlled precious metal recovery by covalently functionalized black phosphorus

ChemSusChem ◽  
2021 ◽  
Author(s):  
Siyu Zhang ◽  
Qing Zhao ◽  
Dongsheng Wang ◽  
Shuo Deng ◽  
Dengyu Li ◽  
...  
Keyword(s):  
Precious Metal ◽  
Metal Recovery ◽  
Black Phosphorus ◽  
Nir Light

Bio-derived materials as a green route for precious & critical metal recovery and re-use

2015 ◽  
Vol 17 (4) ◽  
pp. 1951-1965 ◽  
Author(s):  
Jennifer R. Dodson ◽  
Helen L. Parker ◽  
Andrea Muñoz García ◽  
Alexandra Hicken ◽  
Kaana Asemave ◽  
...  
Keyword(s):  
Precious Metal ◽  
Real Life ◽  
Metal Recovery ◽  
Green Route ◽  
Critical Metal

Overview of research in critical and precious metal recovery using biosorption, application to real-life wastes and uses of the metal-loaded materials.

A Potential Alternative for Precious Metal Recovery from E-waste: Iodine Leaching

2015 ◽  
pp. 150629132750004 ◽  
Author(s):  
Merve Sahin ◽  
Ata Akcil ◽  
Ceren Erust ◽  
Shinar Altynbek ◽  
Chandra Sekhar Gahan ◽  
...  
Keyword(s):  
Precious Metal ◽  
Metal Recovery ◽  
Potential Alternative

scholarly journals Selective Recovery of Copper from a Synthetic Metalliferous Waste Stream Using the Thiourea-Functionalized Ion Exchange Resin Puromet MTS9140

Eng ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 512-530
Author(s):  
Alex L. Riley ◽  
Christopher P. Porter ◽  
Mark D. Ogden
Keyword(s):  
Precious Metal ◽  
High Selectivity ◽  
Exchange Resin ◽  
Fixed Bed ◽  
Ion Exchange Resin ◽  
Metal Recovery ◽  
Solution Chemistry ◽  
Batch Mode ◽  
Acidic Solutions ◽  
By Products

The extraction of Cu from mixed-metal acidic solutions by the thiourea-functionalized resin Puromet MTS9140 was studied. Despite being originally manufactured for precious metal recovery, a high selectivity towards Cu was observed over other first-row transition metals (>90% removal), highlighting a potential for this resin in base metal recovery circuits. Resin behaviour was characterised in batch-mode under a range of pH and sulphate concentrations and as a function of flow rate in a fixed-bed setup. In each instance, a high selectivity and capacity (max. 32.04 mg/g) towards Cu was observed and was unaffected by changes in solution chemistry. The mechanism of extraction was determined by XPS to be through reduction of Cu(II) to Cu(I) rather than chelation. Elution of Cu was achieved by the use of 0.5 M–1 M NaClO3. Despite effective Cu elution (82%), degradation of resin functionality was observed, and further detailed through the application of IC analysis to identify degradation by-products. This work is the first detailed study of a thiourea-functionalized resin being used to selectively target Cu from a complex multi-metal solution.

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